![Roger Federer of Switzerland examines his right foot during a medical break in his match against Guillermo Canas of Argentina during second round play the Pacific Life Open tennis tournament, Sunday, March Roger Federer of Switzerland examines his right foot during a medical break in his match against Guillermo Canas of Argentina during second round play the Pacific Life Open tennis tournament, Sunday, March](https://c8.alamy.com/comp/2PBTCD1/roger-federer-of-switzerland-examines-his-right-foot-during-a-medical-break-in-his-match-against-guillermo-canas-of-argentina-during-second-round-play-the-pacific-life-open-tennis-tournament-sunday-march-11-2007-in-indian-wells-calif-canas-won-7-5-6-2-ap-photomark-j-terrill-2PBTCD1.jpg)
Roger Federer of Switzerland examines his right foot during a medical break in his match against Guillermo Canas of Argentina during second round play the Pacific Life Open tennis tournament, Sunday, March
![Defending champion and top-seed Roger Federer of Switzerland examines his right foot during a medical break in his match against Guillermo Canas of Argentina at the Pacific Life Open tennis tournament in Defending champion and top-seed Roger Federer of Switzerland examines his right foot during a medical break in his match against Guillermo Canas of Argentina at the Pacific Life Open tennis tournament in](https://c8.alamy.com/comp/2PBTCH6/defending-champion-and-top-seed-roger-federer-of-switzerland-examines-his-right-foot-during-a-medical-break-in-his-match-against-guillermo-canas-of-argentina-at-the-pacific-life-open-tennis-tournament-in-indian-wells-calif-sunday-march-11-2007-federer-had-his-feet-attended-to-by-a-trainer-twice-in-the-match-canas-upset-federer-7-5-6-2-ap-photoelise-amendola-2PBTCH6.jpg)
Defending champion and top-seed Roger Federer of Switzerland examines his right foot during a medical break in his match against Guillermo Canas of Argentina at the Pacific Life Open tennis tournament in
![Roger Federer of Switzerland serves to Argentina's Guillermo Canas during their match at the Madrid Masters Series tennis tournament October 18, 2007. REUTERS/Sergio Perez (SPAIN Stock Photo - Alamy Roger Federer of Switzerland serves to Argentina's Guillermo Canas during their match at the Madrid Masters Series tennis tournament October 18, 2007. REUTERS/Sergio Perez (SPAIN Stock Photo - Alamy](https://c8.alamy.com/comp/2E80WJP/roger-federer-of-switzerland-serves-to-argentinas-guillermo-canas-during-their-match-at-the-madrid-masters-series-tennis-tournament-october-18-2007-reuterssergio-perez-spain-2E80WJP.jpg)